mwhuss/nezumi-gem — pull request #2 by rmm5t (2012-07-03 12:04:56+00:00)
Title: Made BlankMessageError an ArgumentError

This shifts `Nezumi::BlankMessageError` to inherit from `ArgumentError` instead of just `StandardError`, since that's what it really is.

I could also make a strong argument that the custom BlankMessageError isn't necessary at all, and merely raising an `ArgumentError.new("Message must not be blank")` would suffice, but I'll leave that design decision to you.